Excavating-machine.



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. 810.828,882. PATENTE) AUG. 28, 1908i E. A. MATHERS.

EXGAVATING MAGHINE.v

APPLICATION FILED DEO.11,1905. v

3 SHEETS-SHEET 3.

witness@ j vUNITED STATES PA :IENT oEEIoE. EZRA A. MATHEES. oF PHILADELPHIA, PENNSYLVANIA.

' p ExoAvATlNG-lvlAoHlNE.

im. Massa.

Patented Aug. 28,1905.

. To all whom it may concern: I

- cation.

Be it known that I, EzRA A. MATHERs, a

citizen ofthe United States, residin at Phila-- delphia, in the county of Philade phia and State of Penns lvania, have invented certain newfand usefu Im rovements inExcavatin Machines, of which the following is aspeci- My said invention consists in'various im proveniente in the construction and arrangement of arts of excavating-machines of that class which are self-propelled and which ca the material excavated away from the the several shafts, &c.

mac ine and load it into a cart or conveyer to be carried away, whereby a very efficient and (powerful .machine in operation is provide as well as one comparatively simple and inexpensive to construct, all asvwill be hereinafter more fully described and claimed. Referring to the accompanying drawings, .which are made 'a art hereof, and on which similar reference c aracters indicate similar parts, Figure 1 is a longitudinal section through a' machine of the character described aseen when looking in thedirection indicated by the arrows from the dotted line 1 1 in Fig. 2; Fig, 2, a top or plan view of the same with the to 'of the frame or the derrick art cut off to s W the mechanism on the ed more clearly; Fi 3, a cross-section on the dotted line 3 3 inig.- 2, and Fi ."4 a detail view showing the construction o one end ofthe digger on an enlarged scale. A

In said drawings the portions marked A represent the-frame of the machine B, the

frame carrying the rotary diggeryC, said rotary digger, andD- the conveyer. The main frame comprises sills, standards, and flooring, suitable to afford' supports for diHerent parts and the various journal-bearings for It is supported upon traction-wheels 5,1nounted upon an axle 6 at its rear end, and upon a roller 7, journaled in ayoke 9, which is swiveledv 'on an .upright shaft 8, mounted in suitable bearings in a cross-sill of said frame A at Its front end. l A boiler 10 is mounted -on the bed near its rear end which supplies steam to the engines 11 and 12, which are also mounted upon said bed or the 'floor of the Inachine. There is preferably a,pair of the engines 11 and also A of the engines 12, arranged on opposite sides tions over drums 1,7 mounted on opposite ends of a shaft 18, whichis journaled in suitable bearings on the sills of the frame A.

Said shaft 18 is provided with a spiral gear4 am, connected to a worm-gear c4 on a steeringshaft A, or may be geared in any manner,

so that it can be operated in either direction.

When ,turned in one direction, it will turn roller7 on pivot 8 to u'ide-the machine one way., and when turne( in the other direction will turn said roller to guid'e it the other way,

as will be readily understood. The engines i 11 are connected fby the pitmen 20 with crank-pins on the ends of a crank-shaft 21,

which is -journaled in suitable bearings in the p top of supports (1.5,extendin up from the bed of the machine. Said cran -shajft has apinion 22 mounted thereon, which meshes with a gear-wheel 23 Von a vshaft 24, mounted in bearings 2 5 on the sills offrame A. Said shaft 24 extends out to within the flanges. of traction-wheels 5 and has a gear 26 on each end, which meshes with a large gear 27, se cured with each of said wheels 5 on the axle 6', thus providing the' driving means for ropeiling said machines. Said gear-whee 23 is mounted-loosely on shaft 24 and has a clutch part 28 on its hub. Another clutch part 29 is mountedon said shaft 24 by means of 4a spline s and is adapted to be thrown into and out of engagement with said clutch part 28 by a shiftin -fork in the'Well-known manner. Thus w en the machine is to be moved! said clutch is engaged, and when it is to remain in a fixed position it is disengaged.

The arms B are preferably constructed of angle-iron, but may be of any suitable form, and are pivoted at their rear ends on pivots or journals b on opposite ends of the rear sill of the frame A. Said arms extend forward to beyond the forward -end of the frame A and surround opposite ends of a cylinder B',

IOO

which cylinder is bolted or otherwise rigidly secured in the circular opening thus formed in the forward end Vof said arms. The top of said cylinder is cutl away between said arms, forming an-opening to receive the excavated material, as will be resently described. Its ends project througlli said arms to the outside thereof and furnish supports for the -conveyer supporting and operating mechanism, as will also be presently described.

The rotrry digger C nioruiteo up around the cylinder E', one neer each end thereof, and hnving radial diggei--blerles C, arranged intervals end supported between them by ineens ol angle-irons clgrivezed both to seid hoods and to said blades as= lt: l

shown niost ph .nlv in itin'. e. Said digger d 4 supported on seid cylinder l? by means of series oi untilrictifi n-rollers e, mounted to rotate on bolts c between each heed C and a ring set u short disteuce outside ot' seid heads und held thereto "oy the seid bolts c und bolts e2, distance-sleeves c and cn being nnuinted on. seid bolts to hold the heads C and ings (l2 rigidly together and the 'proper distance apart. Said distance-sleeves C4 are arranged at regular intervals" neer the outer edge ol seid rings C2 and forni lantern-wheels with which the s})roclwt-ehoins Lt] engage to dri ve seid digger. The digger-blades t" :1re preferably armed with pointed teeth ci. olt chilled steel, bot may be ol' any speciul forni or const-rtullrion required by the particular work on wnieh it is to be used.

y The driving niechonisoi lor the digger oomn prises vthe engines l2, connected by the pitinen 3i) with u crank-pin on cach end of the crunk-shalt 3l. Said crank-shalt 3l is provided with a sprocket $52, which is connected by sprocket-chain 32a with a sprocket 34 on the driving-shalt 325, which is mounted in suitable boxes 35 on the top edges of the arms B. Seid shaft 35% isprorided with o sproeln t-wl1eel 3o on each end, which is connected by n sprocket-chain 37 to another sprechetro/heel 38 on each end oi" a countershaft 39, Whieh mounted in suitable br )Les 3Q on seid urine B et a distance from said shaft 33. Said shaft 559 has o lantern georwheel 40 near euch end, which is connected by ineens of fr sprocket-airain 41 lwith the lantern-gear formed around the outsideol the ends of the rotary digger by the bolts e2 und sleeves et, es before described. Seid genring is thus arranged to drive said rotary digger with great power und enable it to dig inte hard and tough Work with great euse und con'i'ymretive speed.

E he nonveyer .D is en endless belt mounted Within the cylinder B on suitable rollers d and d", iournoled transversely neer earch end of seid eylinder on shafts mounted in suitable bearings secured to the inside of seid oylinder, und extends out through seid cylinder to one side of the machine and supported et Yits outer end upon e roller d2, 'mounted on a shaft 55, journnled in bearings on' the outer end of e tronsversely-extend ig supporting eroi or lirinne D Suid erin D is pivoted nt its inner end upon a transverse pivot-rod or shalt d, which extends transversely from one side to the other in the end et; .eylinder E* neer its low-er side. Said eon'v'eyer lf@ is enen?- less beit, es shown most ele-erw n. Fig* 53,

Seesen comprises two annuler l extends over said rollers d and d nfithni the on and adapted to rota-te l cylinder B', then bach and onder an ngllerroller d4, which is mounted upon o shaft eerried on en adjustable yoke D, then Jfrom the under side of said idler d4 out over the transversely-extending 'freine D and over the roller d2 on its outer end, then beek under seid freine l and under un idler (Z5, nmnrded upon the pivot-rod d, and baci; to the roller d. rl`he udjustable yoke or freine U2 is mounted to slide on suitable support.l L brackets di, secured on the sides ol the eyhuder and has screwthreaded 'perforations engaged by seien-rods d, whieh ere mounted boxes dx and secured freni lo'igitudinul in movement by a collar di. on one side thereot' and by thespur gear-wheels d1" on the other side, which spur-goers mesh yrltlrsumlar gears du on u transverse (mmh-shalt ll, by which seid rods may be turned bock und forth to udiust seid freine D2 to tighten or loosen said conveyer-belt as desired. Guid boards B2 extend 'from ouch edge oi the openingy in cylinder B down to the top ol the conveyor, as most clearly shown. in Fig. l, to guide the n'mterial onto said conveyer and prevent it from beingT deposited in the bottom ol said cylinder. Seid conveyor is driven by means ol'V a. sprocket-wlreel 45 adjooent to the s1)rocket-wheel 35 on sholt ll), which is connected by a sprocket-chaiu ,46 to a s; rociwt-WhCel 48 on u shalt 47, joan'-l nfdd in bearings on the sides oili'l'ran e l( A n'iitoigeer L,lil on said shalt 4? en with a silnihtr rear 5() on the outer end ol` shalt 5l, on which the rollers al is mounted. Seid shalt 5l hns a sprocket-wheel '52 mounted thereon, ond n spr()cltet-ehain 53 runs there--n from to a sprochet-wheel 54 on one eind i shaft 55, on Ye-'hioh roller d2 is mounted at the outer end of the iivoted frame l.

The outer end of the pivoted tranne is supported by in l.uns of a bloeit und tiroide, one bloes du ol' which is connected to e ring on the side ot one of the upright/s of 'freine A, ond the other block all ol which is ronnected to e on o boil '57, mounted on the ends of the L 55 at the outer rnd ol said traine D. ne Leind ol the rope passes bach over n. raie in a third blocli d, olso connected te he lrzn'uo A, und passes back over sheaves t) and (50 on shafts e und of, supported on. the top timber A4 of said l'rznne, and passes den and is connected to a winds ingdruui Gl.

the pivoted lr'enie'B, oa rying the rotan-y digger and opernting mechanism, is supported by means of onble 62, which passes up over u sheave 63 on shaft e2 on the timber: A4 and back to the rear end of 'the machine, Whererit passes down over another shesye 6s on e.l shaft e3 end is connected to e windingu drum 35. The Winding-drum (5l is mounted on. sllfuet o6) journeled in standards 7o, ein' tendu; up from the ted of the nmhise and 4 mounted loosely on its shaft and has a clutch part on its end adapted to engage with a clutch part on the hub of the respective gear? .wheels 67 and 69, said drums being, respectively, engaged by shifting-forks 72 and 73 at their other ends, by which they may be slid on their respective shafts to engage with the gear-wheels when desired. They are held from turning to unwind the cablesjby suitable rack and pawl engagementsas usual in derrick construction and as will be readily understood. By this means the outer end of frame B may be raised and lowered to the proper position, and the outer end of the conveyer-frame D may be raised and lowered to deposit the material' at whatever elevation is desired by the engines, the proper clutch being engaged to operate the appropriate drum as above described.

Having thus fully described my said invention, what I claim as new, and desire to secure by Letters Patent, is

1. An excavating-machine comprising a main frame mounted upon traction-wheels and having a rotary diggersupported thereon upon a pivoted frame, said pivoted frame carrying said rotary digger and the mechanism for conveying the material away from the machine, and means for operating said digger and raising and lowering said frame, substantially as set forth.

2. In an excavating-machine, the combination of the frame, mounted upon wheels, a rotary digger carried by arms, saidA arms pivoted to said frame, means for adjusting and .supporting said pivoted arms at the desired elevation, means for operating said digger, and a conveyer, mounted within said digger and carried by the same pivoted arms, substantially as set forth.

3. In an excavating-machine, vthe combination of the main frame, a pair of pivoted armspivoted'thereto at their rear ends and 'having a hollow cylinder rigidly secured to their outer ends, said cylinder being formed with an opening in its top, a'rotary digger mounted to rotate upon said cylinder and deposit the material through said opening, a

oonveyer'mounted within said cylinder and arranged to receive said material and carry 1t away from the machine, and mechanism for operating said several tially as set forth.

4. In an excavating-machine, the combination, of the frame, the 'pivoted frame mounted thereon, a hollow cylinder carried on the outer end ofpsaid pivoted frame, a rotary digger mounted upon said cylinder, which cy inder has an opening in its top and which digger is arranged to deposit the material lthrough said opening, a conveyer Within lsaid cylinder, and means for operating said-parts, substantially as set forth.

5. An excavating-machine, comprising a rotary digger formed of annular heads with radiallyextending digger-blades between them mounted upon a hollow cylinder, said cylinder provided with an opening in its top, said digger being arranged to deposit the material through said opening, a conveyer within said cylinder, and lmeans for operating said several parts, substantially as set forth.

6. In an excavating-machine, the combination, of the main frame, a pivoted frame, the hollow cylindermounted in said pivoted frame and formed with an opening, a rotary digger comprising annular heads with diggerv blades secured between them and having antifriction-rollers mounted thereon, said rotary parts, siibstandigger being mounted onsaid hollow cylinder with said rollers resting on its surface, and

.means for operating said parts, substantially as set forth.

7. An excavating-machine, comprising la main frame supporting the driving mechan .1sm, a'pivoted frame mounted on said main frame having a hollow cylindrical bearing on -its outer end formed with an opening in its top, a conveyer within said bearing, a rotary digger mounted on said bearing, and the driving mechanism, substantially as set forth.

8. In an excavating-machine, the combi-` nation, of the main frame, the vertically-ad justable frame carried thereby and having a hollow cylindrical bearing atits outer end with an opening in its top, a conveyer in said bearing, a rotary digger comprising annular IOC heads having digger-blades secured between j them,-said heads being mounted to rotate upon said bearing, and means for driving said several parts, substantially as set forth.

In witness whereof I have hereunto set my hand and seal, at lWashington, District of Columbia, this 13th day of November, A. D.

EZRA A. MATHERS. [1.. s.]

Witnesses: E. W. BRADFORD,

CHAs. E. RIoRDoN. 

